Manufacture of steel.



T. J. HESKETT. MANUFACTURE OF STEEL. APPLICATION TILED AUG. 8. 1910.

Patented Apr. 25, 1911.

. the conduit C The blast within the conduit D is at a pressure sufiicient to insure its entering the bath of metal, and is in any case of a higher pressure than the blast within the second set of conduits F which enters the cupola at two or more "points Hand is also led into the converter above the high pressure blast twyers D with the object of burning, away the car-.

bonic oxid constantly being evolved from the bath of molten metal below during its conversion into steel.

A tapping hole G is provided in the well of the cupola A for testing and as a metal drain at the endof the operation. Tapping holes H and I are provided in the converter, the one above the other for testing and for extracting the metal at different levels. A

' slag hole J is-provided at a level above the ,converter hearth.

In Fig. 2 is shown a modification in which the metal is caused to flow from the A into the lntermedlate receiver B through separate from the metal and allow the latter to assume a state of tranquil fusion and to under Figfl. lVith the object of emptying further mix the metals before they pass into the converter B, and the slag is driven off through the slag hole'J the, slag hole J in the converter B being closed. The passage of the metal from the furnace A to the receiver B is continuous, and in like manner the metal flows from the receiver B into the converter B, through the conduit C where 1t 1s treated 111 a llke manner as described the furnace and the-receiver a drain conduit converter B are at different levels so that the K connected from the cupola A to the receiver'B is provided, and a similar conduit is provided from the receiver B to the convcrter B. The cupola A, receiver B ,.and

(:upola This receiver may be em-' ployed with the object of allowing the slagformed in the cupola A and converter 13 to passage of metal from the respective hearths is effected by gravity.

I claim 2- 1. The combination, with a converter, of a. cupola provided with an outlet passage for metal operatively connected with the said converter and arranged above the bottom of the cupola andthereby forming a. well for" metal in the cupola, and means for blowing air into the saidwell to oxidize its contents before permitting the metal to flow into the converter.

The combination, with a converter, of a cupola provided with an outlet passage for metal operatively connected with the said converter and arranged above the bottom of the cupola and thereby forming a well for metal in the cupola, means for blowing air into the said well to oxidize its contents before permitting the metal to flow into the .converter, and means/for blowing air into the sald cupola above-the level of the said 5 passage and at a lower pressure than the air blown into the said well.-

i 3. The combinatiomwith a converter, of a cupola provided witl gtin outlet passage for a metal operat-ively connected with the said 7 converter and arranged above the bottom of the cupola and therebyforming a well for metal in the cupola, means for blowing air into the said well to oxidize its contents before permitting the metal to flow into the converter, and an intermediate receiver for I metal arranged between the said cupola and converter and in which the slag is permitted to separate from the metal.-

In testimon Y whereotI afiix my signature,

in presence 0 two witnesses.

, THOMAS JAMES HESIKETTQ itnesses H. D. JAMESON, J.. E.'Boum. 

